Energy - created from Mind Map

Seite 1

Work

W=Fd

Power

Units - Joules (J)

P=W/t

Units are Watts (W)

746W = 1hp

Kinetic Energy (KE)

(1/2)mv²

for when stuff is moving

Potential Energy

PEg = mgh

There are a lot of different types of Potential Energy

Laws of Conservation

Says that as you change between different types of Energy = you can set all the different types of energy (work, KE, PE, Q) equal

W= ∆KE

W= ∆PE

m(v₁)²/2 + mgh₁ = m(v₂)²/2 + mgh₂

On a problem where it asks for different kinds of energies you should follow the following steps

1. figure out which kinds of energy each step is using

2. set the different types of energy equal to each other for each step

Thermal

Noted as q

Same thing as friction x distance

Energy can be Used to do many things including:

Work

Potential Energy

Kinetic Energy

The force must be parallel to the displacement

it is displacement, not distance

or P=Fv

Energy can't be created or destroyed

Energy

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